Skip to main content

​
Quick Start

Start MCPJam Inspector with a single command: 
npx @mcpjam/inspector@latest
After installation completes, you’ll see a link to localhost. Open that link in your browser to access the inspector.
Don’t have Node.js installed? Download our desktop app for Mac or Windows, or use the hosted app in your browser — no installation needed.

​
Connect Your First MCP Server

Click “Add server” and connect to an MCP server. For this example, we’ll use Anthropic’s sample server: 
npx -y @modelcontextprotocol/server-everything
Server everything demo
Once you submit, the connection status should show “Connected”. You can connect to multiple MCP servers simultaneously on MCPJam.

​
Test an MCP Tool

Navigate to the “Tools” tab to see all available tools from server-everything. This tab lets you manually test individual tools with custom parameters. Try the add tool:
  1. Select the add tool from the list
  2. Set parameters for a and b
  3. Click “Execute”
  4. View the tool’s return value at the bottom
Add tool demo

​
Explore More Features

Now that you’ve connected a server and tested a tool, explore the full power of MCPJam Inspector:

App Builder

Build and test ChatGPT apps and MCP apps with a full widget emulator

LLM Playground

Chat with your MCP server using frontier models like GPT-5 and Claude Sonnet

OAuth Debugger

Debug your OAuth implementation with step-by-step guidance

MCP Inspector

Manually test tools, resources, and prompts with full JSON-RPC logging